Year 11 Human Biology - Graphing

which axis holds each variable

x axis = independent

y axis = dependent

when are line graphs used

for continuous data for both variables

e.g. mass, pH, volume

when is a column or bar graph used

when independent is discrete and dependent is discrete or continuous

what differs a bar from column graoh

a column graph is vertical with gaps and a bar is horizontal with gaps

when is a histogram used

show frequency of categories

how to differ histogram from column graph

a histograms columns touch

what do column graphs show

quantity

what do histograms show

frequency